6310361532
https://svn.open-mpi.org/trac/ompi/wiki/ProcessPlacement The wiki page is incomplete at the moment, but I hope to complete it over the next few days. I will provide updates on the devel list. As the wiki page states, the default and most commonly used options remain unchanged (except as noted below). New, esoteric and complex options have been added, but unless you are a true masochist, you are unlikely to use many of them beyond perhaps an initial curiosity-motivated experimentation. In a nutshell, this commit revamps the map/rank/bind procedure to take into account topology info on the compute nodes. I have, for the most part, preserved the default behaviors, with three notable exceptions: 1. I have at long last bowed my head in submission to the system admin's of managed clusters. For years, they have complained about our default of allowing users to oversubscribe nodes - i.e., to run more processes on a node than allocated slots. Accordingly, I have modified the default behavior: if you are running off of hostfile/dash-host allocated nodes, then the default is to allow oversubscription. If you are running off of RM-allocated nodes, then the default is to NOT allow oversubscription. Flags to override these behaviors are provided, so this only affects the default behavior. 2. both cpus/rank and stride have been removed. The latter was demanded by those who didn't understand the purpose behind it - and I agreed as the users who requested it are no longer using it. The former was removed temporarily pending implementation. 3. vm launch is now the sole method for starting OMPI. It was just too darned hard to maintain multiple launch procedures - maybe someday, provided someone can demonstrate a reason to do so. As Jeff stated, it is impossible to fully test a change of this size. I have tested it on Linux and Mac, covering all the default and simple options, singletons, and comm_spawn. That said, I'm sure others will find problems, so I'll be watching MTT results until this stabilizes. This commit was SVN r25476.
83 строки
2.5 KiB
C
83 строки
2.5 KiB
C
/* -*- C -*-
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*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2011 Cisco Systems, Inc. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#ifndef ORTE_UTIL_HOSTFILE_LEX_H_
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#define ORTE_UTIL_HOSTFILE_LEX_H_
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#include "orte_config.h"
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#ifdef malloc
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#undef malloc
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#endif
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#ifdef realloc
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#undef realloc
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#endif
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#ifdef free
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#undef free
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#endif
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#include <stdio.h>
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typedef union {
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int ival;
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char* sval;
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} orte_hostfile_value_t;
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extern int orte_util_hostfile_lex(void);
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extern FILE *orte_util_hostfile_in;
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extern int orte_util_hostfile_line;
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extern bool orte_util_hostfile_done;
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extern orte_hostfile_value_t orte_util_hostfile_value;
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/*
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* Make lex-generated files not issue compiler warnings
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*/
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#define YY_STACK_USED 0
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#define YY_ALWAYS_INTERACTIVE 0
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#define YY_NEVER_INTERACTIVE 0
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#define YY_MAIN 0
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#define YY_NO_UNPUT 1
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#define YY_SKIP_YYWRAP 1
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#define ORTE_HOSTFILE_DONE 0
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#define ORTE_HOSTFILE_ERROR 1
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#define ORTE_HOSTFILE_QUOTED_STRING 2
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#define ORTE_HOSTFILE_EQUAL 3
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#define ORTE_HOSTFILE_INT 4
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#define ORTE_HOSTFILE_STRING 5
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#define ORTE_HOSTFILE_CPU 6
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#define ORTE_HOSTFILE_COUNT 7
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#define ORTE_HOSTFILE_SLOTS 8
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#define ORTE_HOSTFILE_SLOTS_MAX 9
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#define ORTE_HOSTFILE_USERNAME 10
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#define ORTE_HOSTFILE_IPV4 11
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#define ORTE_HOSTFILE_HOSTNAME 12
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#define ORTE_HOSTFILE_NEWLINE 13
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#define ORTE_HOSTFILE_IPV6 14
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#define ORTE_HOSTFILE_SLOT 15
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#define ORTE_HOSTFILE_RELATIVE 16
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#define ORTE_HOSTFILE_BOARDS 17
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#define ORTE_HOSTFILE_SOCKETS_PER_BOARD 18
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#define ORTE_HOSTFILE_CORES_PER_SOCKET 19
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/* ensure we can handle a rank_file input */
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#define ORTE_HOSTFILE_RANK 20
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#endif
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